MOUNTING M137 TELESCOPE MOUNT ON CROSS-LEVELING FIXTURE
Install telescope mount (1) on adapter keys (2) of test fixture adapter (3).
Install four capscrews (4) and four lockwashers (5) and tighten evenly.
Check that cross-leveling fixture (6) is level. Re-level
Level the top surface of the upper telescope mount
subassembly using parallel bar (7) and precision
level (8) positioned against locating pins (9). Surface
should be horizontal within 0.5 mil. Use cross-level
knob (10) to level M137 telescope mount.